In this area and probably many others the car radio and phone works in tunnels. How is it done? Is there such thing as all-band repeater? Radio is single direction, but phone is bi-directional. I would like to bring signal to metal warehouse building. Radio, walkie-talkie, phone, even WiFi. Now we're talking about MHz to GHz wide spectrum. Can you suggest anything?
Martaine2005
- May 12, 2015
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A quick google search suggests that car radios and mobile phone signals are indeed repeated via specialised ‘leaky feed coax’ running the length of the tunnel walls. While mobile, cellular signals use a base station in the tunnels technical room. Again, using specialised ‘leaky feed’ cable or fibre optic cable running the length of the tunnel wall.
I would use a dedicated device for each device that you have.
Walkie talkie repeater for example.
And WiFi use an outdoor rated wireless bridge or power line Ethernet.
Radio can simply be an external antenna.
Metal buildings act like faraday cages but in some cases a window or doorway may be enough for a signal. It’s try it and see!
I would use a dedicated device for each device that you have.
Walkie talkie repeater for example.
And WiFi use an outdoor rated wireless bridge or power line Ethernet.
Radio can simply be an external antenna.
Metal buildings act like faraday cages but in some cases a window or doorway may be enough for a signal. It’s try it and see!
Martaine2005
- May 12, 2015
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Example on the theory.
Your query seems to have changed somewhat. Now you’re asking about transmitting RF.
And not causing interference.
This is not advisable. Use the appropriate repeater/booster that’s readily available and doesn’t require a license.
Your query seems to have changed somewhat. Now you’re asking about transmitting RF.
And not causing interference.
This is not advisable. Use the appropriate repeater/booster that’s readily available and doesn’t require a license.
cuz it isnt a fibre, it's a coax cable ... that link Martaine did is good
He beat me to answering your Q, I was going to give the same answer
Thanks guys. I thought there may be simple way I don't know about. Buying several repeaters, each drawing power 24/7 would create data center electric bill. This is not "must have" project worth the waste. Green world should start with low power.
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